Operating and Service Guide
HP E-Series E9300 Power Sensors
HP Part No. E9300-90001
Printed in UK
June 1999
©Copyright 1999 Hewlett-Packard Company
Station Road, South Queensferry, Scotland, EH30 9TG, UK.
Notice The information contained in this document is subject to change without
notice. Hewlett-Packard makes no warranty of any kind with regard to this
material, including but not limited to, the implied warranties of
merchantability and fitness for a particular purpose. Hewlett-Packard shall
not be liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use of this
material.
© Copyright Hewlett-Packard Company
All rights reserved. Reproduction, adaptation, or translation without
prior written permission is prohibited, except as allowed under the
copyright laws.
ii
Legal Information
Legal Information
Certification Hewlett-Packard Company certifies that this product met its published
specifications at the time of shipment from the factory. Hewlett-Packard
further certif ie s t h at it s calibration measu re me nts ar e tr aceable to the United
States National Ins ti tu te of Standards and Technol ogy , to the extent allowe d
by the Institute’s calibration facility, and to the calibration facilities of other
International Standards Organization members.
Warranty This Hewlett-Packard instrument product is warranted against defects in
material and workmanship for a period of one year from date of shipment.
During the warranty period, Hewlett-Packard Company will at its option,
either repair or replace products which prove to be defective. For warranty
service or repair , this product must be retu rned to a service fac ility designated
by HP. Buyer shall prepay shipping cha rges to HP and HP shall pay shippi ng
charges, duties, and tax es f or products returned to HP from anot her country.
HP warrants that its soft ware and firmwar e designat ed by HP for use with an
instrument will execut e its programming instru ctions when properly insta lled
on that instrument . HP does not warrant th at t he operation of t he i nst rume nt,
or firmware will be uninterrupted or error free
.
Limitation of Warranty
Exclusive Remedies
The foregoing warranty sh all not appl y to defect s result ing from impro per or
inadequate maintenance by Buyer, Buyer-supplied software or interfacing,
unauthorized modificat ion or misuse, ope ration outside of the environmenta l
specifications for the product, or improper site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP
SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND
EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE FOR ANY
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY
OTHER LEGAL THEORY.
iii
General Safety Information
General Safety Information
The following general sa fety preca utions must be observed d uring all phases
of operation, service and repair of this sensor. Failure to comply with these
precautions or specific warnings elsewhere in this manual violates safety
standards of design manufacture and intended use of the sensor.
Hewlett-Packard Company assumes no li abili ty for the customer’ s failure to
comply with these requirements.
The Instruction Documentation Symbol. The product is marked with this
symbol when it is necessary for the user to refer to the instructions in the
supplied documentation.
WARNING: BEFORE CONNECTING THE POWER SENSOR TO OTHER
INSTRUMENTS ensure that all instruments are connected to the protective
(earth) ground. Any interruption of the protective earth grounding will cause a
potential shock hazard that could result in personal injury.
Sound Emission Herstellerbescheinigung
Diese Information steht im Zusammenhang mit den Anforderungen der
Maschinenlarminformationsverordnung vom 18 Januar 1991.
• Sound Pressure LpA < 70 dB.
• Am Arbeitsplatz.
• Normaler Betrieb.
• Nach DIN 45635 T. 19 (Typprufung).
Manufacturers Declaration
This statem ent is provided to comply with the requirem ents of the German
Sound DIN 45635 T. 19 (Typprufung).
• Sound Pressure LpA < 70 dB.
• At operator position.
• Normal operation.
• According to ISO 7779 (Type Test).
iv
Conventions
Conventions
The following text and format conventions are used to highlight items of
safety and the operation of the associated power meter.
Safety This guide uses cautions and warnings to denote hazards.
CAUTION: Caution denotes a hazard. It calls attention to a procedure that, if not correctly
performed or adhered to, would resu l t in damage to or destruction of the instrume nt.
Do not proceed beyond a caution sign until the indicated conditions are fully
understood and met.
WARNING: Warning denotes a hazard. It calls attention to a procedure which, if not
correctly performed or adhered to, could result in injury or loss of life. Do not
proceed beyond a warning note until the indicated conditions are fully
understood and met.
Power Meter Front Panel Operation
This guide uses the fo llowing symbols to den ote power meter front panel key s
and display legends.
Front Panel Key
Softkey Label
Display Text T e xt shown in this font indicates mes s age t ext dis pl ayed
A function name in a keycap symbol indicates the use of
a key physically located on the power meter’s front
panel.
A function name in display-font indicates the use of a
key down the right side of the pow er meter ’s display
adjacent to the displayed text
by the power meter.
v
Documentation
Documentation
Sensors Covered by Manual
Related Publications
These sensors have a two-part serial number: the prefix (two letters and the
first four numbers), and the suffix (the last four numb ers). The two letters
identify the country in which the unit was manufactured. The four numbers
of the prefix are a code identifying the date of the last major design change
incorporated in your sensor. The four-digit suf fix is a se quential number an d,
coupled with the prefix, provides a unique identification for each unit
produced. The contents of this manual apply directly to all serial numbers
unless otherwise indicated.
The HP E-Series 9300 Power Sensors Operating and Service Guide is also
available in the following languages:
• English Language Operating and Ser vice Gui de - Standard
• German Language Operating and Service Guide - Option ABD
• Spanish Language Operating and Service Guide - Option ABE
• French Language Operating and Service Guide - Option ABF
• Japanese Language Operating and Service Guide - Option ABJ
• Italian Language Operating and Service Guide - Option ABZ
• Korean Language Operating and Service Guide - Option AB1
Further useful information can be found in:
• Application Note 64-1A, Fundamentals of RF and Microwave Power Measurements, available by ordering through your local HP Sales Office.
• The HP EPM Series Power Meter User’s Guide and Programming Guide.
vi
Contents
1 Introduction
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Power Meter Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
The HP E-Series E9300 Power Sensors in Detail . . . . . . . . . . . . . . . 12
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Checking Power Meter Firmware and DSP Revision . . . . . . . . 14
Interconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2 Making Measurements
Power Meter Configuration Changes . . . . . . . . . . . . . . . . . . . . . . . . 19
Measuring Spread Spectrum and Multitone Signals . . . . . . . . . . . . . 20
CDMA Signal Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Multitone Signal Measurements . . . . . . . . . . . . . . . . . . . . . . . . 22
Measuring TDMA Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Power Meter and Sensor Operation . . . . . . . . . . . . . . . . . . . . . . 23
Achieving Stable Results with TDMA Signals . . . . . . . . . . . . . 23
Achieving Stable Results with GSM Signals . . . . . . . . . . . . . . 24
Measurement Accuracy and Speed . . . . . . . . . . . . . . . . . . . . . . . . . 25
Setting the Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Measurement Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3 Specifications and
Characteristics
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Power Sensor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4 Service
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Standing Wave Ratio (SWR) and Reflection Coefficient (Rho)
Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Contents
vii
Contents
Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Repair of Defective Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Reassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Sales and Service Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
viii
1
Introduction
9
Introduction
What You’ll Find In This Chapter
This Chapter introduces you to the HP E-series E9300 power sensors, some
detail on their operation, the minimum power meter requirements and
connecting to your power meter. It contains the following sections:
• “General Information” on page 11
• “The HP E-Series E9300 Power Sensors in Detail” on page 12
• “Getting Started” on page 14
Figure 1 HP E9300A and HP E9301A Power Sensors
10
Introduction
General Information
General Information
Welcome to the HP E-series E9300 power sensors Operating and Service
Guide! This guide contains inf ormation about the in itial inspec tion,
operation, specifi cations a nd repair of the HP E-ser ies E9300 po wer sensors .
Use this guide as a supplement to the HP EPM series power meters User’s
Guides. It is 3-hole dril led to allow you to reta in it in the power meter’s
binder.
All power meter function s are detailed in the HP EPM series power meters
User’s Guide and Programming Guide, however, this guide contains
information specific to the operation of HP E-series E9300 power sensor.
Power Meter Requirements
The HP E-series E9300 power sensors are NOT compatible with the earlier
HP 430-Series, HP E1416A, or HP 70100A power meters. They are
compatible ONLY with the HP EPM series power meters. Also, not all HP
EPM series power meters are immediately compatible - your power meter
must use firmware and Digital Signal Processing (DSP) from a specific
release onwards. "Checking Power Meter Firmware and DSP Revision" on
page 14 tells you how to check your power meter and have it upgraded if
required.
11
Introduction
The HP E-Series E9300 Power Sensors in Detail
The HP E-Series E9300 Power Sensors in Detail
Most power sensors used for measuring average power employ either
thermocouple or dio de technologies. Diode based sensors frequent ly rely on
the application of correction factors to extend their dynamic range beyond
their square law response region, typically -70 dBm to -20 dBm. However,
while this technique achieves wide dynamic range capability, it is limited to
continuous wave (CW) signals outside the square law region. Modulated
signals must be padded down or at low levels, with their average and peak
power levels within the di ode square la w region, to be measured accurately.
Accurate, average power measurement of high level signals carrying
modulation cannot be obtained using a CW correction factor technique.
Specialized modulation sensors provide accurate measurements but are
bandwidth limited.
The HP E-series E9300 powe r sen sors a re true ave rage, wide dy namic r ange
RF microwave power sensors. They are based on a dual sensor
diode pair/attenuator /diode pair proposed by Sze nte et. al. in 1990
shows a block diagram of this technique.
1
. Figure 2
Low Sense
RF in
Figure 2 Simplified Block Diagram of Diode Pair/Attenuator/Diode Pair
1. US Patent #4943764, assigned to Hewlett-Packard Company
12
Low Sense
High Sense
High Sense
+
Lower Range
(-60 dBm to -10 dBm)
–
+
Upper Range
(-10 dBm to +20 dBm)
–
Introduction
The HP E-Series E9300 Power Sensors in Detail
This technique ens ures t he diodes i n th e sel ected signal path are kept i n their
square law regio n, thus the out put curr ent (and voltage) is pro porti onal to the
input power. The diode pair/attenuator/diode pair assembly can yield the
average of complex modulation formats across a wide dynamic range,
irrespective of si gnal bandwidth. The dual range Modif ied Barrier Int egrated
1
Diode (MBID)
package includes further refinements to improve power
handling allowing accurate measurement of high level signals with high
2
crest factors without incurring damage
to the sensor.
These sensors measure average RF power on a wide variety of modulated
signals and are independent of the modulation bandwidth. They are ideally
suited to the average p ower measu rement of multi- tone a nd sprea d spect rum
signals such as CDMA, W-CDMA and digital television formats. Also,
pulsed, TDMA signals can be measured within the constraints detailed in
“Measuring TDMA Signals” on page 23.
3
The results are displayed on a compatible
power meter in logarithmic (dBm
or dB) or linear (Watts or %) measurement units.
1. November 1986 Hewlett-Pac kard Journal pages 14-2, “Diode Integrated
Circuits for Millimeter-Wave Applications.
2. Refer “Maximum Power” on page 30 to for maximum power handling
specifications
3. An HP EPM-Series power meter is required as specified in the section
"Checking Power Meter Firmware and DSP Revision" on page 14.
13
Introduction
Getting Started
Getting Started
Initial Inspection
Inspect the shipping container for damage. If the shipping container or
packaging material is damaged, it should be kept until the contents of the
shipment have been checked mechanically and electrically. If there is
mechanical damage, notify the nearest Hewlett-Packard office. Keep the
damaged shipping materials (if any) for inspection by the carrier and a
Hewlett-Packard representative. If required, you can find a list of
Hewlett-Packard Sales and Service offices on page 48.
Checking Power Meter Firmware and DSP Revision
Before proceeding, first ensure your HP EPM series power meter has both
the required firmware and DSP revisions for the correct operation of your
HP E-series E9300 power sensor.
On the power meter press , , , .
System
Inputs
More
Service
Version
Firmware Revision
Code (dual channel)
DSP Revision
Code
Figure 3 Power Meter Firmware Version Screen
14
Introduction
Getting Started
First check the section labelled DSP Revision:. Release A.01.11 or later is
required. If your power meter has an earlier release, please contact your
nearest Service Office (listed on page 48) to arrange an upgrade.
Next check the sectio n label led
Main F/W R e v:. Release A1.04.00 or later is
required for single channel meters; release A2.04.00 or later is required fo r
dual channel meters. If your power meter has an earlier release, please
contact your nearest Service Office (listed on page 48) to arrange an
upgrade.
NOTE: You can carry out the firmware upgrade yourself if your power meter h as the required
DSP revision and you have World Wide Web access.
Access http://www.tmo.hp.com/tmo/datasheets/English/HPE4418B.html
(or HPE4419B.html) and click on the Related Info tab. Follow the firmware
downloading instruction s.
15
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